Vibratory machine



JulyflI l, I931. v R. 1-. NEWTON 0 VIBRATORY MACHINE Filed Nov. 22, 1929ZSheets-Sheet l INVENTOR. flaky/'0 [MM/f0 ATTORNE July 14, 1931. R. T.NEWTON 1,814,606

VIBRATORY MACHINE Filed Nov. 22, 1929 2 Sheets-Sheet 2 INVENTOR. BYffic'fiar fMgw/m @1470 &

A TTORNE Y.

Patented July 14, 1931 j 1,s14,60e

PATENT oFmcE.

RICHARD T. NEWTON, OF NEW Y QRK, N, Y..

VIBRATORY MACHINE Application filed; November 22; 1929. serial No.408,999.

This invention relates, generally, to vi-.

bratory machines; and the invention has reference, more particularly, tomachines for performing vibratory. body massage for remedial or hygienicpurposes.

Vibratory machines as heretofore generally' constructed have beensomewhat unsatisfactory in use for the reason that whenever itis-desired to vary the length of stroke or the amplitude of vibration ofsuch a machine during a treatment it is necessary to stop the machinebefore the ustment can be made, resulting in inconvenience to the userand the prolonging of the period necessary for treatment. Also, suchmachines commonly in use are rather complicated in structure andaretherefore usually expensive;

The principal object of: the present invention is-to-provide a novel:vibratory machine 5 which is adapted to have its amplitude ofvibratiomreadily and easily variedwhile the machine is-running, therangeoi. such varia tion extending from zero to any value desired upto themaximum-for which the particular machine'is designed.

The invention has for another object to provide a. Vibratory machine ofthe above character which is of simple andcheap-conlstruction as well asreliable in operationl.

Other objects of this invention, notat-t'his time more particularlyenumerated, will? be clearly understood from the followingdetaileddescription of the same.

The invention is clearly illustrated in the accompanying drawings, inwhich Fig. 1 is a plan view of the novel vi bratory machine ofthisinvention; Y

Fig. 2' is a view in side elevation looking at the left side of thestructure shown in Fig. 1' with parts of the supporting pedestal brokenaway; I

Fig. 3 is a sectional View taken along line 3 3of 1 with partsomitted-yand Fig. 4 is a part sectional" view taken along line 4.-l ofFig. 1.

Similar characters of reference are employed' in all of the hereinabovedescribed views to indicate corresponding parts.

Referring now to the said drawings, the novel vibratory machine of thisinvention bracket 7 against'the bushingo and this buslring against theupper surface ofibase 2', thereby rigidly holding these members togetherin fiked relative positions.

A swivel motor base 8 is-positioned on top. of base 2 and has a\vertical aper tuned hearing portion 10 which is swivelly'mounted' on thebushing 6. Motor base 8' is formed with a forwardly projecting tapered:portion. 11. terminating in a handle-12*which extends beyond the forwardmarginal; edge of base 2. This forward marginal edge of base 2 iscurvedalong a circular are having thelength ofaquadrant'of a'circle andthevertical axis of stud 5' as a center and is provided with a. pluralityof vertically extending serrations 13. j A catch 14 ispivotally'mounted'fon: a pin 15 carried'at the undersideof handle12iand" has'a tongue 16' adapted to engage any one of the serrations 13.A compression spring 17. ispositioned between the underside of handle-12 and catch 14 andpresses this catch so that its tongue is urgedintoia serration13, thereby locking handlea12 'andmotor base. 8 againstrelative turning movementabout' bushing 6 and with respect to base 2.

The rear portion of motorbase 8 istransversely enlarged toreceiveandsupport an electric motor 18 which is secured tobase 8 as by screws19. The armature shaft 21 o'fmotor. 18extendsin the direction of. thehandle. 12 and the forward end portion of this shaft has the hub ofcrank 22 secured thereto as by set screws 23. The hub of crankv 22 isprovided with an annular groove or recess 24 into which projects theforked upper end of a thrust plate 25. The lower end portion of thrustplate 25 is secured asbyscrews 26 to the hearing portion 10= of themotor base. Thrust plate absorbs the end thrust of armature shaft 21 andprevents end play of this shaft.

The crank pin 27 is formed eccentrically on crank 22 and projectsthrough a central bearing aperture provided in a yoke 28 constituting anelement of a universal joint or coupling. A screw 32 is threaded intothe end of crank pin 27 and retains a washer against one side of yoke 28thereby retaining this yoke upon the crank pin. The transverseoppositely extending trunnions formed on yoke 28 have hearings in aframe 30 which in turn is provided with vertical oppositely extendingtrunnions having hearings in the enlarged forked inner end of aconnecting rod 31. The central vertical axis of the trunnions of frame30 is substantially aligned at all times with the axis of stud 5 so thatthe swivel motor base 8 and motor 18 may be freely turned about thebushing 6 by means of handle 12, which turning movement merely causesthe trunnions of frame 30 to turn withintheir bearings in the connectingrod 31 without appreciably moving the connecting rod. Inasmuch as thecurved forward marginal edge of the base 2 has the length of a quadrantof a circle, the handle 12 may beturned through an angle of 90. or fromitsposition illustrated in Fig. 1, wherein the connecting rod 31 is atright angles to crank 22 and shaft 21, to a position wherein thisconnecting rod is aligned with the crank 22.

The connecting rod 31 is illustrated as formed in halves which aresecured together by screws 33. The outer end of connecting rod 31 isalso forked and is pivotally connected to the trunnions of a verticalyoke 34 of a second universal joint. Yoke 34': is provided with atransverse bearing aperture through which a joint pin 35 extends. Jointpin 35 has its ends fixed in recesses provided in a transverse rockerarm 36. The universal joint comprising yoke 3 1 and pin 35 universallyconnects the outer end of .1 the connecting rod 31 to the rocker arm 36.This rocker arm 36 is formed midway of its length with a dependingportion 37 having a central vertical bearing aperture extendingtherethrough. Depending portion 37 rests upon the bracket 7 and isrotatably mounted on a bolt 38 which extends through the aperture inthis portion and is threaded through an aperture in bracket 7. Yokes 39are attached to the ends of the roc er arm 36 31 at right angles to thecrank 22 as illustrated in Fig. 1, the plane of motion of a point oncrank pin 27 coincides with the longitudinal axis of the connecting rod,thereby causing the connecting rod to impart a maximum oscillatory orvibratory movement to the rocker arm, whereas when the connecting rod isaligned with the axis of crank 22 and the motor shaft, the plane ofmotion of a point on crank pin 27 will be at right angles to thelongitudinal axis of the connecting rod, resulting in a mere oscillatorymovement of the inner end of the connecting rod without moving therocker arm. At any point intermediate these two extreme positions, thecrank 22 will impart vibratory motion to the rocker arm of an amplitudedepending upon the angle which the connecting rod makes with the crankaxis. As this angle is reduced from 90 the amplitude of vibration of therocker arm decreases proportionally.

This method of varying the amplitude of vibration of the rocker armrenders it a simple matter to change from one amplitude to another atany time whether the motor 18 is running or idle. It is merely necessaryto grasp handle 12 and upon pressing upwardly on catch 14, therebyreleasing tongue 16 from a serration 13, the handle together with motor18 may .be moved to obtain any amplitude of vibration desired. This ishighly desirable for it is important to vary the massage action fromtime to time during a treatment. Catch 14: retains thehandle 12 in anyposition in which it is set.

The thrust plate 25 absorbs the end thrust of shaft 21 and causes all ofthe motion of this shaft to be properly imparted to the connecting rod31 as desired. Owing to the positioning of coupling 28-30 above the stud5, the motor 18 and its base 8 may be readily turned about this studwithout appreciable friction, the trunnions of member 30 merely turningin the forked inner end of connecting rod 31. i

It will be noted that the novel vibratory machine of this invention isof extremely simple and strong construction. It is apparent that theprinciples of this invention may be employed in other uses in additionto the one referred to in this specification.

As many changes could be made in the above construction and manyapparently widely different embodiments of this invention could be madewithout departing from the scope thereof, it is intended that all mattercontained in the above description or shown in the accompanying drawingsshall be interpreted as illustrative and not in a limiting sense.

What is claimed is 1. A vibratory machine of the character describedcomprising, a stationary base, a motor having a base turnably mounted onsaid stationary base, said motor having a rotatable motor shaft, arocker arm pivotally mounted on said stationary base, and meansconnecting said rocker arm to said motor shaft and acting to translatethe rotary movement of said motor shaft to a vibratory movement of saidrocker arm, said connecting means being so constructed and arranged asto cause the amplitude of vibration of said rocker arm to vary as saidmotor base is turned on said stationary base.

2. A vibratory machine of the character described comprising, astationary base, a swivel motor base pivotally mounted on saidstationary base, a motor carried by said motor base, said motor having arotatable shaft, a rocker arm pivotally mounted on said stationary base,and means connecting said rocker arm to said motor shaft and acting totranslate the rotary motion of said motor shaft to a vibratory motion ofsaid rocker arm, said connecting means being so constructed and arrangedthat when said motor base is turned through an angle about its pivotedconnection with said stationary base, the amplitude of vibration of saidrocker arm is varied proportionally to the magnitude of said angle.

3. A vibratory machine of the character described comprising, astationary base, a motor having a base pivotally mounted on saidstationary base, said motor having a rotatable motor shaft, a cranksecured to said motor shaft, a rocker arm pivotally mounted on saidstationary base, a connecting rod having its inner end universallyconnected to said crank and its outer end universally connected to saidrocker arm for translating the rotary motion of said crank to avibratory motion of said rocker arm, said motor base being turnableabout its pivotal connection with said stationary base during theoperation of said motor to elfect variation in the amplitude ofvibration of said rocker arm;

4. A vibratory machine for body massage comprising, a stationary base, amotor having a base pivotally mounted on said stationary base, a handleformed on said motor base for turning said motor about its pivotalconnection with said stationary base, means for retaining' said handlein any desired position, said motor having an armature driven motorshaft, a crank secured to said shaft, a rocker arm pivotally mounted onsaid stationary base, a connecting rod having its inner end universallyconnected to said crank and its outer end universally connected to saidrocker arm for translating the rotary motion of said crank to avibratory motion of said rocker arm, and a belt attached to the ends ofsaid rocker arm for effecting body massage,the amplitude of vibration ofsaid rocker arm being varied at will while said motor is running from amaximum when said handle is at one extreme position to zero when said rhandle is at its other extreme position.

5; A vibratory machine for body massage comprising, a stationary base, asupporting stud extending upwardly from said base, a motor having a basepivotally mounted on said stud, a handle formed on said motor base forturning said motor about said stud, means for retaining said handle inany desired position, said motor having an armature driven motor shaft,a crank secured to said shaft, a rocker arm pivotally mounted on saidstationary base, a connecting rod having its inner end universallyconnected to said crank and its outer enduniversally connected to saidrocker arm for translating the rotary motion of said crank to avibratory motion of said rocker arm, the universal connection at theinner end of said connecting rod being positioned over said supportingstud, and a belt attached to the ends of said rocker arm for effectingbody massage, the amplitude of vibration of said rocker arm being variedat will while said motor is running from a maximum when said handle isat one extreme position to zero when said handle is at its other extremeposition. i r

In testimony, that I claim the invention set forth above I have hereuntoset my hand this20th day of November, 1929.

RICHARD T. NEWTON.

